Fix possible build errors (local build kernel)

/* -*- mode: c; c-basic-offset: 8; -*-

 * vim: noexpandtab sw=8 ts=8 sts=0:

 *

 * configfs.h - definitions for the device driver filesystem

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public

 * License along with this program; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 021110-1307, USA.

 *

 * Based on sysfs:

 * 	sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel

 *

 * Based on kobject.h:

 *      Copyright (c) 2002-2003	Patrick Mochel

 *      Copyright (c) 2002-2003	Open Source Development Labs

 *

 * configfs Copyright (C) 2005 Oracle.  All rights reserved.

 *

 * Please read Documentation/filesystems/configfs/configfs.txt before using

 * the configfs interface, ESPECIALLY the parts about reference counts and

 * item destructors.

 */

#ifndef _CONFIGFS_H_

#define _CONFIGFS_H_

#include <linux/kernel.h>

#include <linux/types.h>

#include <linux/list.h>

#include <linux/kref.h>

#include <linux/mutex.h>

#include <linux/err.h>

#include <linux/atomic.h>

#define CONFIGFS_ITEM_NAME_LEN	20

struct module;

struct configfs_item_operations;

struct configfs_group_operations;

struct configfs_attribute;

struct configfs_subsystem;

struct config_item {

	char			*ci_name;

	char			ci_namebuf[CONFIGFS_ITEM_NAME_LEN];

	struct kref		ci_kref;

	struct list_head	ci_entry;

	struct config_item	*ci_parent;

	struct config_group	*ci_group;

	struct config_item_type	*ci_type;

	struct dentry		*ci_dentry;

};

extern int config_item_set_name(struct config_item *, const char *, ...);

static inline char *config_item_name(struct config_item * item)

{

	return item->ci_name;

}

extern void config_item_init(struct config_item *);

extern void config_item_init_type_name(struct config_item *item,

				       const char *name,

				       struct config_item_type *type);

extern struct config_item * config_item_get(struct config_item *);

extern void config_item_put(struct config_item *);

struct config_item_type {

	struct module				*ct_owner;

	struct configfs_item_operations		*ct_item_ops;

	struct configfs_group_operations	*ct_group_ops;

	struct configfs_attribute		**ct_attrs;

};

/**

 *	group - a group of config_items of a specific type, belonging

 *	to a specific subsystem.

 */

struct config_group {

	struct config_item		cg_item;

	struct list_head		cg_children;

	struct configfs_subsystem 	*cg_subsys;

	struct config_group		**default_groups;

};

extern void config_group_init(struct config_group *group);

extern void config_group_init_type_name(struct config_group *group,

					const char *name,

					struct config_item_type *type);

static inline struct config_group *to_config_group(struct config_item *item)

{

	return item ? container_of(item,struct config_group,cg_item) : NULL;

}

static inline struct config_group *config_group_get(struct config_group *group)

{

	return group ? to_config_group(config_item_get(&group->cg_item)) : NULL;

}

static inline void config_group_put(struct config_group *group)

{

	config_item_put(&group->cg_item);

}

extern struct config_item *config_group_find_item(struct config_group *,

						  const char *);

struct configfs_attribute {

	const char		*ca_name;

	struct module 		*ca_owner;

	umode_t			ca_mode;

};

/*

 * Users often need to create attribute structures for their configurable

 * attributes, containing a configfs_attribute member and function pointers

 * for the show() and store() operations on that attribute. If they don't

 * need anything else on the extended attribute structure, they can use

 * this macro to define it  The argument _item is the name of the

 * config_item structure.

 */

#define CONFIGFS_ATTR_STRUCT(_item)					\

struct _item##_attribute {						\

	struct configfs_attribute attr;					\

	ssize_t (*show)(struct _item *, char *);			\

	ssize_t (*store)(struct _item *, const char *, size_t);		\

}

/*

 * With the extended attribute structure, users can use this macro

 * (similar to sysfs' __ATTR) to make defining attributes easier.

 * An example:

 * #define MYITEM_ATTR(_name, _mode, _show, _store)	\

 * struct myitem_attribute childless_attr_##_name =	\

 *         __CONFIGFS_ATTR(_name, _mode, _show, _store)

 */

#define __CONFIGFS_ATTR(_name, _mode, _show, _store)			\

{									\

	.attr	= {							\

			.ca_name = __stringify(_name),			\

			.ca_mode = _mode,				\

			.ca_owner = THIS_MODULE,			\

	},								\

	.show	= _show,						\

	.store	= _store,						\

}

/* Here is a readonly version, only requiring a show() operation */

#define __CONFIGFS_ATTR_RO(_name, _show)				\

{									\

	.attr	= {							\

			.ca_name = __stringify(_name),			\

			.ca_mode = 0444,				\

			.ca_owner = THIS_MODULE,			\

	},								\

	.show	= _show,						\

}

/*

 * With these extended attributes, the simple show_attribute() and

 * store_attribute() operations need to call the show() and store() of the

 * attributes.  This is a common pattern, so we provide a macro to define

 * them.  The argument _item is the name of the config_item structure.

 * This macro expects the attributes to be named "struct <name>_attribute"

 * and the function to_<name>() to exist;

 */

#define CONFIGFS_ATTR_OPS(_item)					\

static ssize_t _item##_attr_show(struct config_item *item,		\

				 struct configfs_attribute *attr,	\

				 char *page)				\

{									\

	struct _item *_item = to_##_item(item);				\

	struct _item##_attribute *_item##_attr =			\

		container_of(attr, struct _item##_attribute, attr);	\

	ssize_t ret = 0;						\

									\

	if (_item##_attr->show)						\

		ret = _item##_attr->show(_item, page);			\

	return ret;							\

}									\

static ssize_t _item##_attr_store(struct config_item *item,		\

				  struct configfs_attribute *attr,	\

				  const char *page, size_t count)	\

{									\

	struct _item *_item = to_##_item(item);				\

	struct _item##_attribute *_item##_attr =			\

		container_of(attr, struct _item##_attribute, attr);	\

	ssize_t ret = -EINVAL;						\

									\

	if (_item##_attr->store)					\

		ret = _item##_attr->store(_item, page, count);		\

	return ret;							\

}

/*

 * If allow_link() exists, the item can symlink(2) out to other

 * items.  If the item is a group, it may support mkdir(2).

 * Groups supply one of make_group() and make_item().  If the

 * group supports make_group(), one can create group children.  If it

 * supports make_item(), one can create config_item children.  make_group()

 * and make_item() return ERR_PTR() on errors.  If it has

 * default_groups on group->default_groups, it has automatically created

 * group children.  default_groups may coexist alongsize make_group() or

 * make_item(), but if the group wishes to have only default_groups

 * children (disallowing mkdir(2)), it need not provide either function.

 * If the group has commit(), it supports pending and committed (active)

 * items.

 */

struct configfs_item_operations {

	void (*release)(struct config_item *);

	ssize_t	(*show_attribute)(struct config_item *, struct configfs_attribute *,char *);

	ssize_t	(*store_attribute)(struct config_item *,struct configfs_attribute *,const char *, size_t);

	int (*allow_link)(struct config_item *src, struct config_item *target);

	int (*drop_link)(struct config_item *src, struct config_item *target);

};

struct configfs_group_operations {

	struct config_item *(*make_item)(struct config_group *group, const char *name);

	struct config_group *(*make_group)(struct config_group *group, const char *name);

	int (*commit_item)(struct config_item *item);

	void (*disconnect_notify)(struct config_group *group, struct config_item *item);

	void (*drop_item)(struct config_group *group, struct config_item *item);

};

struct configfs_subsystem {

	struct config_group	su_group;

	struct mutex		su_mutex;

};

static inline struct configfs_subsystem *to_configfs_subsystem(struct config_group *group)

{

	return group ?

		container_of(group, struct configfs_subsystem, su_group) :

		NULL;

}

int configfs_register_subsystem(struct configfs_subsystem *subsys);

void configfs_unregister_subsystem(struct configfs_subsystem *subsys);

/* These functions can sleep and can alloc with GFP_KERNEL */

/* WARNING: These cannot be called underneath configfs callbacks!! */

int configfs_depend_item(struct configfs_subsystem *subsys, struct config_item *target);

void configfs_undepend_item(struct configfs_subsystem *subsys, struct config_item *target);

#endif /* _CONFIGFS_H_ */

/*

 * Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */

#ifndef __DEBUG_H_

#define __DEBUG_H_

#define DBG_MAX_MSG   1024UL

#define DBG_MSG_LEN   80UL

#define TIME_BUF_LEN  17

#define DBG_EVENT_LEN  (DBG_MSG_LEN - TIME_BUF_LEN)

extern unsigned int enable_event_log;

extern void put_timestamp(char *tbuf);

extern void add_event_to_buf(char *tbuf);

extern int debug_debugfs_init(void);

extern void debug_debugfs_exit(void);

#define LOGLEVEL_NONE 8

#define LOGLEVEL_DEBUG 7

#define LOGLEVEL_INFO 6

#define LOGLEVEL_ERR 3

#define log_event(log_level, x...)					\

do {									\

	char buf[DBG_MSG_LEN];						\

	if (log_level == LOGLEVEL_DEBUG)				\

		pr_debug(x);						\

	else if (log_level == LOGLEVEL_ERR)				\

		pr_err(x);						\

	else if (log_level == LOGLEVEL_INFO)				\

		pr_info(x);						\

	if (enable_event_log) {						\

		put_timestamp(buf);					\

		snprintf(&buf[TIME_BUF_LEN - 1], DBG_EVENT_LEN, x);	\

		add_event_to_buf(buf);					\

	}								\

} while (0)

#define log_event_none(x, ...) log_event(LOGLEVEL_NONE, x, ##__VA_ARGS__)

#define log_event_dbg(x, ...) log_event(LOGLEVEL_DEBUG, x, ##__VA_ARGS__)

#define log_event_err(x, ...) log_event(LOGLEVEL_ERR, x, ##__VA_ARGS__)

#define log_event_info(x, ...) log_event(LOGLEVEL_INFO, x, ##__VA_ARGS__)

#endif	/* __DEBUG_H_ */

/*

 * u_f.h

 *

 * Utility definitions for USB functions

 *

 * Copyright (c) 2013 Samsung Electronics Co., Ltd.

 *		http://www.samsung.com

 *

 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef __U_F_H__

#define __U_F_H__

/* Variable Length Array Macros **********************************************/

#define vla_group(groupname) size_t groupname##__next = 0

#define vla_group_size(groupname) groupname##__next

#define vla_item(groupname, type, name, n) \

	size_t groupname##_##name##__offset = ({			       \

		size_t align_mask = __alignof__(type) - 1;		       \

		size_t offset = (groupname##__next + align_mask) & ~align_mask;\

		size_t size = (n) * sizeof(type);			       \

		groupname##__next = offset + size;			       \

		offset;							       \

	})

#define vla_item_with_sz(groupname, type, name, n) \

	size_t groupname##_##name##__sz = (n) * sizeof(type);		       \

	size_t groupname##_##name##__offset = ({			       \

		size_t align_mask = __alignof__(type) - 1;		       \

		size_t offset = (groupname##__next + align_mask) & ~align_mask;\

		size_t size = groupname##_##name##__sz;			       \

		groupname##__next = offset + size;			       \

		offset;							       \

	})

#define vla_ptr(ptr, groupname, name) \

	((void *) ((char *)ptr + groupname##_##name##__offset))

struct usb_ep;

struct usb_request;

struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len);

#endif /* __U_F_H__ */